Adapt: Why success always starts with failure, by Tim Harford

Tim Harford's new book, with some sensible rules on the importance of failure. Interesting examples (Google's 20% rule, the Surge in Iraq, Twyla Tharp's choreography) - all reminiscent of the surplus conditions that allow for play and creativity. But how such such a surplus of ideas and practice happen in a limits-conscious society? What are the truly sustainable conditions of innovation?